2 # GPIO infrastructure and drivers
5 config ARCH_HAVE_CUSTOM_GPIO_H
8 Selecting this config option from the architecture Kconfig allows
9 the architecture to provide a custom asm/gpio.h implementation
10 overriding the default implementations. New uses of this are
17 This enables GPIO support through the generic GPIO library.
18 You only need to enable this, if you also want to enable
19 one or more of the GPIO drivers below.
25 config GPIOLIB_FASTPATH_LIMIT
26 int "Maximum number of GPIOs for fast path"
30 This adjusts the point at which certain APIs will switch from
31 using a stack allocated buffer to a dynamically allocated buffer.
33 You shouldn't need to change this unless you really need to
34 optimize either stack space or performance. Change this carefully
35 since setting an incorrect value could cause stack corruption.
46 config GPIOLIB_IRQCHIP
51 bool "Debug GPIO calls"
52 depends on DEBUG_KERNEL
54 Say Y here to add some extra checks and diagnostics to GPIO calls.
55 These checks help ensure that GPIOs have been properly initialized
56 before they are used, and that sleeping calls are not made from
57 non-sleeping contexts. They can make bitbanged serial protocols
58 slower. The diagnostics help catch the type of setup errors
59 that are most common when setting up new platforms or boards.
62 bool "/sys/class/gpio/... (sysfs interface)"
65 Say Y here to add a sysfs interface for GPIOs.
67 This is mostly useful to work around omissions in a system's
68 kernel support. Those are common in custom and semicustom
69 hardware assembled using standard kernels with a minimum of
70 custom patches. In those cases, userspace code may import
71 a given GPIO from the kernel, if no kernel driver requested it.
73 Kernel drivers may also request that a particular GPIO be
74 exported to userspace; this can be useful when debugging.
77 depends on HAS_IOMEM # Only for IOMEM drivers
80 # put drivers in the right section, in alphabetical order
82 # This symbol is selected by both I2C and SPI expanders
86 menu "Memory mapped GPIO drivers"
90 tristate "GPIO driver for 74xx-ICs with MMIO access"
94 Say yes here to support GPIO functionality for 74xx-compatible ICs
95 with MMIO access. Compatible models include:
96 1 bit: 741G125 (Input), 741G74 (Output)
97 2 bits: 742G125 (Input), 7474 (Output)
98 4 bits: 74125 (Input), 74175 (Output)
99 6 bits: 74365 (Input), 74174 (Output)
100 8 bits: 74244 (Input), 74273 (Output)
101 16 bits: 741624 (Input), 7416374 (Output)
104 tristate "Altera GPIO"
106 select GPIOLIB_IRQCHIP
108 Say Y or M here to build support for the Altera PIO device.
110 If driver is built as a module it will be called gpio-altera.
113 tristate "AMD Promontory GPIO support"
117 driver for GPIO functionality on Promontory IOHub
118 Require ACPI ASL code to enumerate as a platform device.
121 tristate "Aspeed GPIO support"
122 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
123 select GPIOLIB_IRQCHIP
125 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
128 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
130 depends on ATH79 || COMPILE_TEST
132 select GPIOLIB_IRQCHIP
134 Select this option to enable GPIO driver for
135 Atheros AR71XX/AR724X/AR913X SoC devices.
137 config GPIO_RASPBERRYPI_EXP
138 tristate "Raspberry Pi 3 GPIO Expander"
139 default RASPBERRYPI_FIRMWARE
141 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
142 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
143 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
145 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
146 the firmware mailbox to communicate with VideoCore on BCM283x chips.
149 bool "Broadcom Kona GPIO"
150 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
152 Turn on GPIO support for Broadcom "Kona" chips.
155 tristate "BRCMSTB GPIO support"
156 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
157 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
161 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
164 tristate "CLPS711X GPIO support"
165 depends on ARCH_CLPS711X || COMPILE_TEST
168 Say yes here to support GPIO on CLPS711X SoCs.
171 bool "TI Davinci/Keystone GPIO support"
172 default y if ARCH_DAVINCI
173 depends on ARM && (ARCH_DAVINCI || ARCH_KEYSTONE)
175 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
178 tristate "Synopsys DesignWare APB GPIO driver"
180 select GENERIC_IRQ_CHIP
182 Say Y or M here to build support for the Synopsys DesignWare APB
186 tristate "Spreadtrum EIC support"
187 depends on ARCH_SPRD || COMPILE_TEST
189 select GPIOLIB_IRQCHIP
191 Say yes here to support Spreadtrum EIC device.
194 tristate "Emma Mobile GPIO"
195 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
197 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
201 depends on ARCH_EP93XX
203 select GPIOLIB_IRQCHIP
206 tristate "Support for GPIO pins on XR17V352/354/358"
207 depends on SERIAL_8250_EXAR
209 Selecting this option will enable handling of GPIO pins present
210 on Exar XR17V352/354/358 chips.
213 bool "GE FPGA based GPIO"
217 Support for common GPIO functionality provided on some GE Single Board
220 This driver provides basic support (configure as input or output, read
221 and write pin state) for GPIO implemented in a number of GE single
224 config GPIO_FTGPIO010
225 bool "Faraday FTGPIO010 GPIO"
228 select GPIOLIB_IRQCHIP
229 default (ARCH_GEMINI || ARCH_MOXART)
231 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
232 Cortina systems Gemini platforms, Moxa ART and others.
234 config GPIO_GENERIC_PLATFORM
235 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
238 Say yes here to support basic platform_device memory-mapped GPIO controllers.
241 tristate "Aeroflex Gaisler GRGPIO support"
246 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
247 VHDL IP core library.
250 tristate "Nintendo Wii (Hollywood) GPIO"
254 Select this to support the GPIO controller of the Nintendo Wii.
259 tristate "Intel ICH GPIO"
260 depends on PCI && X86
264 Say yes here to support the GPIO functionality of a number of Intel
265 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
266 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
267 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
272 tristate "Intel IOP GPIO"
273 depends on ARCH_IOP32X || ARCH_IOP33X || COMPILE_TEST
276 Say yes here to support the GPIO functionality of a number of Intel
282 bool "Loongson-2/3 GPIO support"
283 depends on CPU_LOONGSON2 || CPU_LOONGSON3
285 driver for GPIO functionality on Loongson-2F/3A/3B processors.
288 tristate "NXP LPC18XX/43XX GPIO support"
289 default y if ARCH_LPC18XX
290 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
292 Select this option to enable GPIO driver for
293 NXP LPC18XX/43XX devices.
295 config GPIO_LYNXPOINT
296 tristate "Intel Lynxpoint GPIO support"
297 depends on ACPI && X86
298 select GPIOLIB_IRQCHIP
300 driver for GPIO functionality on Intel Lynxpoint PCH chipset
301 Requires ACPI device enumeration code to set up a platform device.
304 tristate "GPIO support for Fujitsu MB86S7x Platforms"
306 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
309 tristate "MEN 16Z127 GPIO support"
313 Say yes here to support the MEN 16Z127 GPIO Controller
315 config GPIO_MM_LANTIQ
316 bool "Lantiq Memory mapped GPIOs"
317 depends on LANTIQ && SOC_XWAY
319 This enables support for memory mapped GPIOs on the External Bus Unit
320 (EBU) found on Lantiq SoCs. The gpios are output only as they are
321 created by attaching a 16bit latch to the bus.
324 tristate "GPIO Testing Driver"
325 depends on GPIOLIB && SYSFS
327 select GPIOLIB_IRQCHIP
330 This enables GPIO Testing driver, which provides a way to test GPIO
331 subsystem through sysfs(or char device) and debugfs. GPIO_SYSFS
332 must be selected for this test.
333 User could use it through the script in
334 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
339 depends on PPC_MPC52xx
342 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
343 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
344 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
349 Say Y here if you're going to use hardware that connects to the
350 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
353 bool "Mediatek MT7621 GPIO Support"
354 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
357 select GPIOLIB_IRQCHIP
359 Say yes here to support the Mediatek MT7621 SoC GPIO device
363 depends on PLAT_ORION || ARCH_MVEBU
365 select GENERIC_IRQ_CHIP
372 select GENERIC_IRQ_CHIP
378 select GENERIC_IRQ_CHIP
381 tristate "Cavium OCTEON GPIO"
382 depends on GPIOLIB && CAVIUM_OCTEON_SOC
385 Say yes here to support the on-chip GPIO lines on the OCTEON
389 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
390 default y if ARCH_OMAP
392 select GENERIC_IRQ_CHIP
393 select GPIOLIB_IRQCHIP
395 Say yes here to enable GPIO support for TI OMAP SoCs.
398 bool "PrimeCell PL061 GPIO support"
401 select GPIOLIB_IRQCHIP
403 Say yes here to support the PrimeCell PL061 GPIO device
405 config GPIO_PMIC_EIC_SPRD
406 tristate "Spreadtrum PMIC EIC support"
407 depends on MFD_SC27XX_PMIC || COMPILE_TEST
409 select GPIOLIB_IRQCHIP
411 Say yes here to support Spreadtrum PMIC EIC device.
414 bool "PXA GPIO support"
415 depends on ARCH_PXA || ARCH_MMP
417 Say yes here to support the PXA GPIO device
420 tristate "Renesas R-Car GPIO"
421 depends on ARCH_RENESAS || COMPILE_TEST
422 select GPIOLIB_IRQCHIP
424 Say yes here to support GPIO on Renesas R-Car SoCs.
429 A 32-bit single register GPIO fixed in/out implementation. This
430 can be used to represent any register as a set of GPIO signals.
433 tristate "SIOX GPIO support"
435 select GPIOLIB_IRQCHIP
437 Say yes here to support SIOX I/O devices. These are units connected
438 via a SIOX bus and have a number of fixed-direction I/O lines.
440 config GPIO_SPEAR_SPICS
441 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
442 depends on PLAT_SPEAR
443 select GENERIC_IRQ_CHIP
445 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
448 tristate "Spreadtrum GPIO support"
449 depends on ARCH_SPRD || COMPILE_TEST
451 select GPIOLIB_IRQCHIP
453 Say yes here to support Spreadtrum GPIO device.
456 bool "STA2x11/ConneXt GPIO support"
457 depends on MFD_STA2X11
458 select GENERIC_IRQ_CHIP
460 Say yes here to support the STA2x11/ConneXt GPIO device.
461 The GPIO module has 128 GPIO pins with alternate functions.
464 bool "XWAY STP GPIOs"
467 This enables support for the Serial To Parallel (STP) unit found on
468 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
469 that can be up to 24 bit. This peripheral is aimed at driving leds.
470 Some of the gpios/leds can be auto updated by the soc with dsl and
474 tristate "GPIO based on SYSCON"
475 depends on MFD_SYSCON && OF
477 Say yes here to support GPIO functionality though SYSCON driver.
482 select GENERIC_IRQ_CHIP
486 bool "NVIDIA Tegra GPIO support"
488 depends on ARCH_TEGRA || COMPILE_TEST
491 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
494 tristate "NVIDIA Tegra186 GPIO support"
495 default ARCH_TEGRA_186_SOC
496 depends on ARCH_TEGRA_186_SOC || COMPILE_TEST
498 select GPIOLIB_IRQCHIP
500 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
503 tristate "TS-4800 DIO blocks and compatibles"
505 depends on SOC_IMX51 || COMPILE_TEST
508 This driver support TS-4800 FPGA GPIO controllers.
511 tristate "Cavium ThunderX/OCTEON-TX GPIO"
512 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
514 select IRQ_DOMAIN_HIERARCHY
515 select IRQ_FASTEOI_HIERARCHY_HANDLERS
517 Say yes here to support the on-chip GPIO lines on the ThunderX
518 and OCTEON-TX families of SoCs.
521 tristate "UniPhier GPIO support"
522 depends on ARCH_UNIPHIER || COMPILE_TEST
524 select IRQ_DOMAIN_HIERARCHY
526 Say yes here to support UniPhier GPIOs.
530 depends on ARCH_MXC && SOC_VF610
531 select GPIOLIB_IRQCHIP
533 Say yes here to support Vybrid vf610 GPIOs.
536 tristate "NEC VR4100 series General-purpose I/O Uint support"
537 depends on CPU_VR41XX
539 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
542 tristate "VIA VX855/VX875 GPIO"
543 depends on (X86 || COMPILE_TEST) && PCI
547 Support access to the VX855/VX875 GPIO lines through the gpio library.
549 This driver provides common support for accessing the device,
550 additional drivers must be enabled in order to use the
551 functionality of the device.
554 bool "APM X-Gene GPIO controller support"
555 depends on ARM64 && OF_GPIO
557 This driver is to support the GPIO block within the APM X-Gene SoC
558 platform's generic flash controller. The GPIO pins are muxed with
559 the generic flash controller's address and data pins. Say yes
560 here to enable the GFC GPIO functionality.
563 tristate "APM X-Gene GPIO standby controller support"
564 depends on ARCH_XGENE && OF_GPIO
566 select GPIOLIB_IRQCHIP
567 select IRQ_DOMAIN_HIERARCHY
569 This driver supports the GPIO block within the APM X-Gene
570 Standby Domain. Say yes here to enable the GPIO functionality.
573 tristate "Xilinx GPIO support"
576 Say yes here to support the Xilinx FPGA GPIO device
579 tristate "Netlogic XLP GPIO support"
580 depends on OF_GPIO && (CPU_XLP || ARCH_THUNDER2 || COMPILE_TEST)
581 select GPIOLIB_IRQCHIP
583 This driver provides support for GPIO interface on Netlogic XLP MIPS64
584 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
585 XLP9XX and XLP5XX. The same GPIO controller block is also present in
586 Cavium's ThunderX2 CN99XX SoCs.
591 bool "Xtensa GPIO32 support"
593 depends on HAVE_XTENSA_GPIO32
596 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
597 and EXPSTATE (output) ports
600 bool "LSI ZEVIO SoC memory mapped GPIOs"
601 depends on ARM && OF_GPIO
603 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
606 tristate "Xilinx Zynq GPIO support"
607 depends on ARCH_ZYNQ || ARCH_ZYNQMP
608 select GPIOLIB_IRQCHIP
610 Say yes here to support Xilinx Zynq GPIO controller.
613 bool "ZTE ZX GPIO support"
614 depends on ARCH_ZX || COMPILE_TEST
615 select GPIOLIB_IRQCHIP
617 Say yes here to support the GPIO device on ZTE ZX SoCs.
619 config GPIO_LOONGSON1
620 tristate "Loongson1 GPIO support"
621 depends on MACH_LOONGSON32
624 Say Y or M here to support GPIO on Loongson1 SoCs.
628 menu "Port-mapped I/O GPIO drivers"
629 depends on X86 # Unconditional I/O space access
631 config GPIO_104_DIO_48E
632 tristate "ACCES 104-DIO-48E GPIO support"
635 select GPIOLIB_IRQCHIP
637 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
638 104-DIO-24E). The base port addresses for the devices may be
639 configured via the base module parameter. The interrupt line numbers
640 for the devices may be configured via the irq module parameter.
642 config GPIO_104_IDIO_16
643 tristate "ACCES 104-IDIO-16 GPIO support"
646 select GPIOLIB_IRQCHIP
648 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
649 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
650 base port addresses for the devices may be configured via the base
651 module parameter. The interrupt line numbers for the devices may be
652 configured via the irq module parameter.
654 config GPIO_104_IDI_48
655 tristate "ACCES 104-IDI-48 GPIO support"
658 select GPIOLIB_IRQCHIP
660 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
661 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
662 the devices may be configured via the base module parameter. The
663 interrupt line numbers for the devices may be configured via the irq
667 tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
669 This option enables support for GPIOs found on Fintek Super-I/O
670 chips F71869, F71869A, F71882FG, F71889F and F81866.
672 To compile this driver as a module, choose M here: the module will
673 be called f7188x-gpio.
676 tristate "Diamond Systems GPIO-MM GPIO support"
680 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
682 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
683 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
684 support for these 48 channels of digital I/O.
686 The base port addresses for the devices may be configured via the base
687 array module parameter.
690 tristate "IT87xx GPIO support"
692 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
694 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
695 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
698 To compile this driver as a module, choose M here: the module will
702 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
703 depends on (X86 || COMPILE_TEST) && PCI
707 Say yes here to support GPIO interface on Intel Poulsbo SCH,
708 Intel Tunnel Creek processor, Intel Centerton processor or
709 Intel Quark X1000 SoC.
711 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
712 powered by the core power rail and are turned off during sleep
713 modes (S3 and higher). The remaining four GPIOs are powered by
714 the Intel SCH suspend power supply. These GPIOs remain
715 active during S3. The suspend powered GPIOs can be used to wake the
716 system from the Suspend-to-RAM state.
718 The Intel Tunnel Creek processor has 5 GPIOs powered by the
719 core power rail and 9 from suspend power supply.
721 The Intel Centerton processor has a total of 30 GPIO pins.
722 Twenty-one are powered by the core power rail and 9 from the
723 suspend power supply.
725 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
726 power well and 6 from the suspend power well.
729 tristate "SMSC SCH311x SuperI/O GPIO"
731 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
732 SCH3116 "Super I/O" chipsets.
734 To compile this driver as a module, choose M here: the module will
735 be called gpio-sch311x.
738 tristate "TS-5500 DIO blocks and compatibles"
739 depends on TS5500 || COMPILE_TEST
741 This driver supports Digital I/O exposed by pin blocks found on some
742 Technologic Systems platforms. It includes, but is not limited to, 3
743 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
747 tristate "Winbond Super I/O GPIO support"
750 This option enables support for GPIOs found on Winbond Super I/O
752 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
755 You will need to provide a module parameter "gpios", or a
756 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
757 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
759 To compile this driver as a module, choose M here: the module will
760 be called gpio-winbond.
763 tristate "WinSystems WS16C48 GPIO support"
765 select GPIOLIB_IRQCHIP
767 Enables GPIO support for the WinSystems WS16C48. The base port
768 addresses for the devices may be configured via the base module
769 parameter. The interrupt line numbers for the devices may be
770 configured via the irq module parameter.
774 menu "I2C GPIO expanders"
778 tristate "ADP5588 I2C GPIO expander"
780 This option enables support for 18 GPIOs found
781 on Analog Devices ADP5588 GPIO Expanders.
783 config GPIO_ADP5588_IRQ
784 bool "Interrupt controller support for ADP5588"
785 depends on GPIO_ADP5588=y
787 Say yes here to enable the adp5588 to be used as an interrupt
788 controller. It requires the driver to be built in the kernel.
791 tristate "Avionic Design N-bit GPIO expander"
793 select GPIOLIB_IRQCHIP
795 This option enables support for N GPIOs found on Avionic Design
796 I2C GPIO expanders. The register space will be extended by powers
797 of two, so the controller will need to accommodate for that. For
798 example: if a controller provides 48 pins, 6 registers will be
799 enough to represent all pins, but the driver will assume a
800 register layout for 64 pins (8 registers).
803 tristate "Maxim MAX7300 GPIO expander"
806 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
809 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
811 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
812 Port Expanders. Each IO port on these chips has a fixed role of
813 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
814 Input and Output (designed by 'P'). The combinations are listed
817 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
818 max7322 (4I4O), max7323 (4P4O)
820 16 bits: max7324 (8I8O), max7325 (8P8O),
821 max7326 (4I12O), max7327 (4P12O)
823 Board setup code must specify the model to use, and the start
824 number for these GPIOs.
826 config GPIO_MAX732X_IRQ
827 bool "Interrupt controller support for MAX732x"
828 depends on GPIO_MAX732X=y
829 select GPIOLIB_IRQCHIP
831 Say yes here to enable the max732x to be used as an interrupt
832 controller. It requires the driver to be built in the kernel.
834 config GPIO_MC9S08DZ60
835 bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
836 depends on I2C=y && MACH_MX35_3DS
838 Select this to enable the MC9S08DZ60 GPIO driver
841 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
843 Say yes here to provide access to several register-oriented
844 SMBus I/O expanders, made mostly by NXP or TI. Compatible
847 4 bits: pca9536, pca9537
849 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
850 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
852 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
857 40 bits: pca9505, pca9698
859 config GPIO_PCA953X_IRQ
860 bool "Interrupt controller support for PCA953x"
861 depends on GPIO_PCA953X=y
862 select GPIOLIB_IRQCHIP
864 Say yes here to enable the pca953x to be used as an interrupt
865 controller. It requires the driver to be built in the kernel.
868 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
869 select GPIOLIB_IRQCHIP
872 Say yes here to provide access to most "quasi-bidirectional" I2C
873 GPIO expanders used for additional digital outputs or inputs.
874 Most of these parts are from NXP, though TI is a second source for
875 some of them. Compatible models include:
877 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
878 pca9670, pca9672, pca9674, pca9674a,
881 16 bits: pcf8575, pcf8575c, pca8575,
882 pca9671, pca9673, pca9675
884 Your board setup code will need to declare the expanders in
885 use, and assign numbers to the GPIOs they expose. Those GPIOs
886 can then be used from drivers and other kernel code, just like
887 other GPIOs, but only accessible from task contexts.
889 This driver provides an in-kernel interface to those GPIOs using
890 platform-neutral GPIO calls.
893 tristate "TPIC2810 8-Bit I2C GPO expander"
895 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
897 To compile this driver as a module, choose M here: the module will
898 be called gpio-tpic2810.
901 tristate "Technologic Systems FPGA I2C GPIO"
902 depends on SOC_IMX6 || COMPILE_TEST
905 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
906 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
910 menu "MFD GPIO expanders"
913 tristate "GPIO Support for ADP5520 PMIC"
914 depends on PMIC_ADP5520
916 This option enables support for on-chip GPIO found
917 on Analog Devices ADP5520 PMICs.
919 config GPIO_ALTERA_A10SR
920 tristate "Altera Arria10 System Resource GPIO"
921 depends on MFD_ALTERA_A10SR
923 Driver for Arria10 Development Kit GPIO expansion which
924 includes reads of pushbuttons and DIP switches as well
928 tristate "Wolfson Microelectronics Arizona class devices"
929 depends on MFD_ARIZONA
931 Support for GPIOs on Wolfson Arizona class devices.
933 config GPIO_BD9571MWV
934 tristate "ROHM BD9571 GPIO support"
935 depends on MFD_BD9571MWV
937 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
938 available on the ROHM PMIC in total, both of which can also
941 This driver can also be built as a module. If so, the module
942 will be called gpio-bd9571mwv.
944 config GPIO_CRYSTAL_COVE
945 tristate "GPIO support for Crystal Cove PMIC"
946 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
947 select GPIOLIB_IRQCHIP
949 Support for GPIO pins on Crystal Cove PMIC.
951 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
954 This driver can also be built as a module. If so, the module will be
955 called gpio-crystalcove.
958 tristate "AMD CS5535/CS5536 GPIO support"
959 depends on X86 || MIPS || COMPILE_TEST
960 depends on MFD_CS5535
962 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
963 can be used for quite a number of things. The CS5535/6 is found on
964 AMD Geode and Lemote Yeeloong devices.
969 tristate "Dialog DA9052 GPIO"
970 depends on PMIC_DA9052
972 Say yes here to enable the GPIO driver for the DA9052 chip.
975 tristate "Dialog Semiconductor DA9055 GPIO"
976 depends on MFD_DA9055
978 Say yes here to enable the GPIO driver for the DA9055 chip.
980 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
981 be controller by this driver.
983 If driver is built as a module it will be called gpio-da9055.
986 tristate "Diolan DLN2 GPIO support"
988 select GPIOLIB_IRQCHIP
991 Select this option to enable GPIO driver for the Diolan DLN2
994 This driver can also be built as a module. If so, the module
995 will be called gpio-dln2.
998 bool "HTC EGPIO support"
999 depends on GPIOLIB && ARM
1001 This driver supports the CPLD egpio chip present on
1002 several HTC phones. It provides basic support for input
1003 pins, output pins, and irqs.
1005 config GPIO_JANZ_TTL
1006 tristate "Janz VMOD-TTL Digital IO Module"
1007 depends on MFD_JANZ_CMODIO
1009 This enables support for the Janz VMOD-TTL Digital IO module.
1010 This driver provides support for driving the pins in output
1011 mode only. Input mode is not supported.
1014 tristate "Kontron ETX / COMexpress GPIO"
1015 depends on MFD_KEMPLD
1017 This enables support for the PLD GPIO interface on some Kontron ETX
1018 and COMexpress (ETXexpress) modules.
1020 This driver can also be built as a module. If so, the module will be
1024 tristate "TI/National Semiconductor LP3943 GPIO expander"
1025 depends on MFD_LP3943
1027 GPIO driver for LP3943 MFD.
1028 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1029 Open drain outputs are required for this usage.
1032 tristate "TI LP873X GPO"
1033 depends on MFD_TI_LP873X
1035 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1038 This driver can also be built as a module. If so, the module will be
1042 tristate "TI LP87565 GPIO"
1043 depends on MFD_TI_LP87565
1045 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1048 This driver can also be built as a module. If so, the module will be
1049 called gpio-lp87565.
1052 tristate "Cirrus Logic Madera class codecs"
1053 depends on PINCTRL_MADERA
1055 Support for GPIOs on Cirrus Logic Madera class codecs.
1057 config GPIO_MAX77620
1058 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1059 depends on MFD_MAX77620
1061 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1062 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1063 driver also provides interrupt support for each of the gpios.
1064 Say yes here to enable the max77620 to be used as gpio controller.
1067 bool "Intel MSIC mixed signal gpio support"
1068 depends on (X86 || COMPILE_TEST) && MFD_INTEL_MSIC
1070 Enable support for GPIO on intel MSIC controllers found in
1074 bool "TI PALMAS series PMICs GPIO"
1075 depends on MFD_PALMAS
1077 Select this option to enable GPIO driver for the TI PALMAS
1081 bool "RICOH RC5T583 GPIO"
1082 depends on MFD_RC5T583
1084 Select this option to enable GPIO driver for the Ricoh RC5T583
1086 This driver provides the support for driving/reading the gpio pins
1087 of RC5T583 device through standard gpio library.
1091 depends on MFD_STMPE
1093 select GPIOLIB_IRQCHIP
1095 This enables support for the GPIOs found on the STMPE I/O
1099 bool "TC3589X GPIOs"
1100 depends on MFD_TC3589X
1102 select GPIOLIB_IRQCHIP
1104 This enables support for the GPIOs found on the TC3589X
1107 config GPIO_TIMBERDALE
1108 bool "Support for timberdale GPIO IP"
1109 depends on MFD_TIMBERDALE
1111 Add support for the GPIO IP in the timberdale FPGA.
1113 config GPIO_TPS65086
1114 tristate "TI TPS65086 GPO"
1115 depends on MFD_TPS65086
1117 This driver supports the GPO on TI TPS65086x PMICs.
1119 config GPIO_TPS65218
1120 tristate "TPS65218 GPIO"
1121 depends on MFD_TPS65218
1123 Select this option to enable GPIO driver for the TPS65218
1126 config GPIO_TPS6586X
1127 bool "TPS6586X GPIO"
1128 depends on MFD_TPS6586X
1130 Select this option to enable GPIO driver for the TPS6586X
1133 config GPIO_TPS65910
1134 bool "TPS65910 GPIO"
1135 depends on MFD_TPS65910
1137 Select this option to enable GPIO driver for the TPS65910
1140 config GPIO_TPS65912
1141 tristate "TI TPS65912 GPIO"
1142 depends on MFD_TPS65912
1144 This driver supports TPS65912 gpio chip
1146 config GPIO_TPS68470
1147 bool "TPS68470 GPIO"
1148 depends on MFD_TPS68470
1150 Select this option to enable GPIO driver for the TPS68470
1152 There are 7 GPIOs and few sensor related GPIOs supported
1153 by the TPS68470. While the 7 GPIOs can be configured as
1154 input or output as appropriate, the sensor related GPIOs
1155 are "output only" GPIOs.
1157 This driver config is bool, as the GPIO functionality
1158 of the TPS68470 must be available before dependent
1162 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1163 depends on TWL4030_CORE
1165 Say yes here to access the GPIO signals of various multi-function
1166 power management chips from Texas Instruments.
1169 tristate "TWL6040 GPO"
1170 depends on TWL6040_CORE
1172 Say yes here to access the GPO signals of twl6040
1173 audio chip from Texas Instruments.
1176 tristate "Philips UCB1400 GPIO"
1177 depends on UCB1400_CORE
1179 This enables support for the Philips UCB1400 GPIO pins.
1180 The UCB1400 is an AC97 audio codec.
1182 config GPIO_WHISKEY_COVE
1183 tristate "GPIO support for Whiskey Cove PMIC"
1184 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1185 select GPIOLIB_IRQCHIP
1187 Support for GPIO pins on Whiskey Cove PMIC.
1189 Say Yes if you have a Intel SoC based tablet with Whiskey Cove PMIC
1192 This driver can also be built as a module. If so, the module will be
1196 tristate "WM831x GPIOs"
1197 depends on MFD_WM831X
1199 Say yes here to access the GPIO signals of WM831x power management
1200 chips from Wolfson Microelectronics.
1203 tristate "WM8350 GPIOs"
1204 depends on MFD_WM8350
1206 Say yes here to access the GPIO signals of WM8350 power management
1207 chips from Wolfson Microelectronics.
1210 tristate "WM8994 GPIOs"
1211 depends on MFD_WM8994
1213 Say yes here to access the GPIO signals of WM8994 audio hub
1214 CODECs from Wolfson Microelectronics.
1218 menu "PCI GPIO expanders"
1222 tristate "AMD 8111 GPIO driver"
1223 depends on X86 || COMPILE_TEST
1225 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
1227 Note, that usually system firmware/ACPI handles GPIO pins on their
1228 own and users might easily break their systems with uncarefull usage
1234 tristate "BT8XX GPIO abuser"
1235 depends on VIDEO_BT848=n
1237 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1238 as a cheap PCI GPIO card.
1240 This chip can be found on Miro, Hauppauge and STB TV-cards.
1242 The card needs to be physically altered for using it as a
1243 GPIO card. For more information on how to build a GPIO card
1244 from a BT8xx TV card, see the documentation file at
1245 Documentation/bt8xxgpio.txt
1249 config GPIO_INTEL_MID
1250 bool "Intel MID GPIO support"
1251 depends on X86_INTEL_MID
1252 select GPIOLIB_IRQCHIP
1254 Say Y here to support Intel MID GPIO.
1256 config GPIO_MERRIFIELD
1257 tristate "Intel Merrifield GPIO support"
1258 depends on X86_INTEL_MID
1259 select GPIOLIB_IRQCHIP
1261 Say Y here to support Intel Merrifield GPIO.
1264 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1265 depends on X86 || COMPILE_TEST
1266 select GENERIC_IRQ_CHIP
1268 ML7213 is companion chip for Intel Atom E6xx series.
1269 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
1270 Hub) which is for IVI(In-Vehicle Infotainment) use.
1271 This driver can access the IOH's GPIO device.
1274 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
1275 depends on X86_32 || MIPS || COMPILE_TEST
1276 select GENERIC_IRQ_CHIP
1278 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
1279 which is an IOH(Input/Output Hub) for x86 embedded processor.
1280 This driver can access PCH GPIO device.
1282 This driver also can be used for LAPIS Semiconductor IOH(Input/
1283 Output Hub), ML7223 and ML7831.
1284 ML7223 IOH is for MP(Media Phone) use.
1285 ML7831 IOH is for general purpose use.
1286 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1287 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1289 config GPIO_PCI_IDIO_16
1290 tristate "ACCES PCI-IDIO-16 GPIO support"
1291 select GPIOLIB_IRQCHIP
1293 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1294 generated when any of the inputs change state (low to high or high to
1295 low). Input filter control is not supported by this driver, and the
1296 input filters are deactivated by this driver.
1298 config GPIO_PCIE_IDIO_24
1299 tristate "ACCES PCIe-IDIO-24 GPIO support"
1300 select GPIOLIB_IRQCHIP
1302 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1303 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1304 when any of the inputs change state (low to high or high to low).
1305 Input filter control is not supported by this driver, and the input
1306 filters are deactivated by this driver.
1309 tristate "RDC R-321x GPIO support"
1313 Support for the RDC R321x SoC GPIOs over southbridge
1314 PCI configuration space.
1316 config GPIO_SODAVILLE
1317 bool "Intel Sodaville GPIO support"
1318 depends on X86 && OF
1320 select GENERIC_IRQ_CHIP
1322 Say Y here to support Intel Sodaville GPIO.
1326 menu "SPI GPIO expanders"
1327 depends on SPI_MASTER
1330 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1333 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1334 shift registers. This driver can be used to provide access
1335 to more gpio outputs.
1337 config GPIO_MAX3191X
1338 tristate "Maxim MAX3191x industrial serializer"
1341 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1342 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1343 chip to make 8 digital 24V inputs available via SPI. Supports
1344 CRC checksums to guard against electromagnetic interference,
1345 as well as undervoltage and overtemperature detection.
1348 tristate "Maxim MAX7301 GPIO expander"
1351 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1354 tristate "Freescale MC33880 high-side/low-side switch"
1356 SPI driver for Freescale MC33880 high-side/low-side switch.
1357 This provides GPIO interface supporting inputs and outputs.
1360 tristate "Generic parallel-in/serial-out shift register"
1362 GPIO driver for SPI compatible parallel-in/serial-out shift
1363 registers. These are input only devices.
1366 tristate "EXAR XRA1403 16-bit GPIO expander"
1369 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1373 menu "USB GPIO expanders"
1376 config GPIO_VIPERBOARD
1377 tristate "Viperboard GPIO a & b support"
1378 depends on MFD_VIPERBOARD
1380 Say yes here to access the GPIO signals of Nano River
1381 Technologies Viperboard. There are two GPIO chips on the
1382 board: gpioa and gpiob.
1383 See viperboard API specification and Nano
1384 River Tech's viperboard.h for detailed meaning
1385 of the module parameters.